Eirdu, Carrier of Dawn
Mikaeus, the Unhallowed
Altar of Dementia

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield (Eirdu as Isilu, Carrier of Twilight on the battlefield).
You control another nontoken non-Human creature with base toughness 2 or greater.

   Steps

How does this combo work?
1
Activate Altar of Dementia by sacrificing another nontoken non-Human creature
2
When the creature dies, its undying ability triggers, returning the creature from your graveyard to the battlefield with a +1/+1 counter on it.
3
Activate Altar of Dementia by sacrificing the creature with a +1/+1 counter on it.
4
When the creature dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
5
Resolve the Altar of Dementia abilities from step 1 and 3.
6
Repeat.

   Results

What do I get from this combo?
Infinite LTB
Infinite ETB
Infinite sacrifice triggers
Infinite death triggers
Infinite mill
Infinite self-mill
Eirdu, Carrier of Dawn
22%inclusion204 decks921 decks
Top Commanders
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New Cards
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29%synergy
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High Synergy Cards
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87%synergy
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82%synergy
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80%synergy
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Creatures
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42%synergy
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49%synergy
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35%synergy
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38%synergy
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25%synergy
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29%synergy
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15%synergy
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7%synergy
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4%synergy
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11%synergy
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9%synergy
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8%synergy
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8%synergy
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7%synergy
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1%synergy
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4%synergy
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4%synergy
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4%synergy
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1%synergy
Planeswalkers
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14%synergy
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67%synergy
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56%synergy
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13%synergy
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29%synergy
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21%synergy
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1%synergy
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20%synergy
Fellwar Stone
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8%synergy
The Soul Stone
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17%synergy
Thought Vessel
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-2%synergy
Mind Stone
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0%synergy
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5%synergy
Chrome Mox
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6%synergy
Mana Vault
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5%synergy
Mox Diamond
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3%synergy
Lands
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72%synergy
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71%synergy
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58%synergy
Command Tower
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14%synergy
Godless Shrine
85%inclusion194 decks228 decks
44%synergy
Savai Triome
78%inclusion7 decks9 decks
53%synergy
Indatha Triome
78%inclusion7 decks9 decks
50%synergy
Temple Garden
78%inclusion7 decks9 decks
39%synergy
Overgrown Tomb
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37%synergy
Hallowed Fountain
75%inclusion3 decks4 decks
35%synergy
Watery Grave
75%inclusion3 decks4 decks
34%synergy
Isolated Chapel
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38%synergy
Vault of Champions
67%inclusion153 decks228 decks
43%synergy
Caves of Koilos
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36%synergy
Marsh Flats
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51%synergy
Shattered Sanctum
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45%synergy
Sacred Foundry
56%inclusion5 decks9 decks
19%synergy
Blood Crypt
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18%synergy
Fetid Heath
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40%synergy
Bleachbone Verge
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43%synergy
Shadowy Backstreet
43%inclusion98 decks228 decks
33%synergy
Tainted Field
43%inclusion98 decks228 decks
30%synergy
Brightclimb Pathway
41%inclusion94 decks228 decks
33%synergy
Sunbillow Verge
33%inclusion3 decks9 decks
26%synergy
Blazemire Verge
33%inclusion3 decks9 decks
22%synergy
Underground Mortuary
33%inclusion3 decks9 decks
21%synergy
Savannah
33%inclusion3 decks9 decks
20%synergy
Bayou
33%inclusion3 decks9 decks
20%synergy
Sulfurous Springs
33%inclusion3 decks9 decks
10%synergy
Luxury Suite
33%inclusion3 decks9 decks
9%synergy
Sandsteppe Citadel
33%inclusion3 decks9 decks
8%synergy
Sunpetal Grove
33%inclusion3 decks9 decks
6%synergy
Battlefield Forge
33%inclusion3 decks9 decks
5%synergy
Woodland Cemetery
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2%synergy
Exotic Orchard
29%inclusion67 decks228 decks
-7%synergy
Silent Clearing
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24%synergy
Shineshadow Snarl
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16%synergy
Scrubland
24%inclusion55 decks228 decks
10%synergy
Orzhov Basilica
23%inclusion52 decks228 decks
8%synergy
Concealed Courtyard
22%inclusion51 decks228 decks
16%synergy
Fabled Passage
21%inclusion49 decks228 decks
12%synergy
Prismatic Vista
18%inclusion40 decks228 decks
13%synergy
Flooded Strand
17%inclusion38 decks228 decks
5%synergy
Temple of Silence
17%inclusion38 decks228 decks
-1%synergy
Polluted Delta
15%inclusion34 decks228 decks
3%synergy
Desolate Mire
14%inclusion33 decks228 decks
8%synergy
Arid Mesa
14%inclusion33 decks228 decks
4%synergy
Verdant Catacombs
14%inclusion32 decks228 decks
3%synergy
Windswept Heath
14%inclusion32 decks228 decks
3%synergy